//
/***********************************************************
             File name:      main.c
             Author:         Bitat (陆叁柒)
             Email :         Bitat@qq.com
             Gitee :         https://gitee.com/bitat
             CSDN  :         https://blog.csdn.net/bitat
             History:        2023/1/12
 ************************************************************/


#include <stdio.h>

void change(int *pa, int *pb)
{
    int tmp = *pa;

    *pa = *pb;
    *pb = tmp;
}

int main()
{
    int a = 0;
    int b = 0;

    scanf("%d%d", &a, &b);
    printf("a=%d b=%d\n", a, b);
    change(&a, &b);
    printf("a=%d b=%d\n", a, b);

    return 0;
}
